The HammerSword is a weapon both created and wielded by Heward of Heward's Stalwarts. Crafted from mithril and dragon bone and powered by the enslaved soul of a demon, the +4 sword has the capacity several times a day to hammer-swing - that is swing three times in fast succession, beating enemies down and tearing their armor apart. There is a minute cumulative chance per hammer-swing (one tenth of 1%; 1%; 10%) that the demon's soul will escape the weapon, so it is an ability used spairingly. It was forged using a lava vent on Michipicoten Island.